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MASSIVE-MIMO 本论文根据最小均方根误差准则(MMSE),提出一种非正交设计导频的方法,这 法在MAS Communication 通讯编程文档 238万源代码下载- www.pudn.com
 文件名称: MASSIVE-MIMO下载   收藏√  [投票:非常好  5  4  3  2  1 投票:太差了]
  所属分类: Communication
  开发工具: PDF
  文件大小: 122 KB
  上传时间: 2015-05-06
  下载次数: 1
  提 供 者: wangyanyan
 详细说明:本论文根据最小均方根误差准则(MMSE),提出一种非正交设计导频的方法,这种方法在MASSIVE MIMO中非常有效。-In this letter, the error variance of the Minimal Mean-Square Error (MMSE) channel estimator is analyzed, and its analytic formula is given. Based on the analytic formula, a designing criterion on the pilot signals is proposed. When training time slots can be large enough, our criterion confirms the well-known fact that orthogonal pilot signals are optimal. But if training time slots are not enough to support this orthogonality, our results show that the error variance is lower-bounded away zero, no matter what kind of pilot signals are used. In this case, the design of pilot signals should be implemented by using the line packing on a complex Grassmannian manifold
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